How to Get Browser Geolocation into a CFC Using Ajax?

I'm building a mobile optimized site and would like to deliver relavant content based on the users location. All my content is geocoded so I can handle that part as long as I can get the users coordinates. I'd like to use The HTML 5 geolocation info as opposed to a service or google API. I have found tons of scripts to get the users coordinates, but how can I pass the coordinates to a CFC (preferably without a click) so I can then begin to customize the users content on subsequent page requests?

Thanks!